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首页> 外文期刊>Ecological research >Effects of macaque ingestion on seed destruction and germination of a fleshy-fruited tree, Eurya emarginata
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Effects of macaque ingestion on seed destruction and germination of a fleshy-fruited tree, Eurya emarginata

机译：猕猴摄入对肉质果树Eurya emarginata种子破坏和发芽的影响

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摘要

Effects of macaque ingestion were examined on both seed destruction during passage through the gut and germination enhancement after defecation, using typically endozoochorous fruits of Eurya emarginata. Mechanical and chemical actions associated with the ingestion were also examined. A fruit-feeding experiment found that 4.4% of ingested seeds could pass intact through the gut of Japanese macaques. No significant difference was detected between the seed passage percentages of six Eurya emarginata trees despite individual variation in seed weight and hardness, implying that mastication is a major factor in the severe seed mortality during the gut passage. Seeds in intact fruits showed lower germination percentage and longer germination delay than seeds with the flesh removed artificially. In contrast, no enhancement in germination was observed after passage through the gut. A series of seed treatment experiments indicated that seed abrasion did not affect germination percentage, though acid and heat-exposure enhanced the germination. The two factors, severe seed destruction and germination enhancement by flesh removal, opposed each other. With the survival proportion of uningested seeds taken as 1.0, the survival proportion of ingested seeds was estimated as 0.49 with the 95% confidence interval of 0.14-1.46, which indicated no significant difference between the proportions of ingested- and uningested-seeds.
机译：猕猴的食入对通过肠道的种子破坏和排便后发芽增强的影响进行了检查，通常使用Eurya emarginata的食道内水果。还检查了与摄入有关的机械和化学作用。一项喂食水果的实验发现，摄入的种子中有4.4％可以完整地通过日本猕猴的肠道。尽管种子重量和硬度存在个体差异，但在六种欧洲ur草的种子传代百分比之间未检测到显着差异，这表明咀嚼是肠道传代期间严重种子死亡率的主要因素。与人工去除果肉的种子相比，完整果实中的种子表现出较低的发芽率和较长的发芽延迟。相反，通过肠道后未观察到发芽增强。一系列种子处理实验表明，尽管酸和热暴露会增强种子发芽，但种子磨耗不会影响发芽率。这两个因素，严重的种子破坏和通过去除果肉促进发芽，相互对立。以未食用种子的存活率为1.0，估计摄取种子的存活率为0.49，95％置信区间为0.14-1.46，这表明摄取和未摄取种子的比例之间没有显着差异。

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